Electric conductor



Sept. 6, 1932.` E. J. SCHNEIDER E1- AL ELECTRIC CONDUCTOR Filed Feb. 15. 192e am.: sab, 1932 1 `A 1,876,350#

,UNITED sr-A'TasrATENrf ori-Ica f H or :'rmrca. ,um ummm n. naam', or anooxLni, :mwv Yonx, assurons, nr Assmmmms, 'ro GENERAL canna couronner. or .nw Yonx, n. Y., a concurran or maw msnr l armo c oNnUcTon vAppumnm am February is, me. semi' no. sans.

This invention relates to electric conducrangement, one strip 7a being adjacent the tors or cables such as are commonl used in other strip 7b if wound in multiple, and with the wiring of buildings for the supp y of cur- `the adjacent' edges of said stri preferably'` rent thereto for lighting or other purposes. overlapping as clearly seen in 1 and 4r 5 It an object of the invention to provide imof the drawing. i j j 55 proved insulated conductors and cables. Another casing, jacket or. wra ping 8 is. l Y Other objects and advantages. of the inven-j wound upon the casing 7 and is a preferti'on will appear hereinafter, ably Wound in pairs 0f Strips 8a and 8b. ,The The invention is fully disclosed in the fol-y strips 8a and 8b may be similar to the strips .10 lowing s ilication, of .which theaccomv 7 a and 7 b, or they may be `wrapped with ad- 50 .panying rawin forms apart, in which the jacent edges abutting as clearl shown in Fig; separate parts o .our improvement areJ des- 3. In the latter case during the operation of ignited by suitable reference lcharacters in Winding thestrips ,8a and 8b into the casing' each ofthe views, and in which :e f or jacket- 7, a plurality of strands 9, which 18 Fig. 1"is a detail view of an electric conducare relatively small with respect to said strips, 05 l i tor y einplol g two metal conductors -con-A may beinterwoven with the strips 8a and 8b tained withi: a single casing illustrating the and extend longitudinally of the conductor 'several insulation and protective casings or and in "'circumferentially spaced relation. jackets employed; 'Theweaving of the strands 9 is accomplished A 2o Fig.'2is a section onthe line 2,-'.2oiFi 1;- -by passing each strand. first -over one of the 70 Fig. 3 is asectional, detail view of one' orm' strips 8a'f'-8b,"then under the next adjacent A. of laminated strip or strips which we may ofsaid strips and the adjacent strands are so y l' employ in forming one or more of the cas-A woven that where one strand passes outward- 40 a a 5 alie' Insulation casm 6 preferably com' non-metallic sheathed cable and the whole is in loli jackets shown in Fig?. 1and`2; and ly over one of the strips Sez-'86,' the adjacent ig. 4 isa view similar t0 ig. 3 but ShOW- strand passes therebeneath as clearly seen '75 ing another form of strip which we may emin Fig, 1 of the drawing'.

Pl'Oy- The casing or jacket 8 includingthe strands' Itwillbeundestood thatou inventin re- "9 which-are prefmblybomped of fibrous 5 lates-to electric conductors and more particumaterial, may be treated with Ia. {impl-mf as A. lady to the insulatingvnd-Protectiveovel" well as waterproof compound. It will'be '80.7#

ings ,employed ill-onnectio with m-uicnoted that it is alsoy preferred that the strips yontductorsl Whil wlhave sbstwn for llllvlS; 8a and 8b are `spirallywound on the casing .zz-ss; Samaritans @za-7.11.1 th@ mam-g fthe sin 4le stran'cl1 conldug'tor ma n be employgdd. Tmp? lia an@ 7b Wl'ththe 'Sftrlpsa'sgovex I Figs. 1 and 2 of the rawing, 5 repre- .ppmg the mt'er,Sectl-on oft e s n ps arm.

lntsdlslie xmftgl c mfutg gllglggnbl '.Ihe conductors thus formed are enclosed in mgruntedrl onriidslszeeciireduto the conductor. a brous out@ )i1-c ket'or ca-Smglo prefer-ably' p i composed'of-bralded fabrlc, so as to form a posed-of a plastic insu atingcompound'such l Y as rubber or a compound having a relatlvely treated wlth a' water proof 'aswell as a' fire bi h, mena of rubber. At 7,-we have y Proof @01? 1901111 .1t bemgndemood mi shwii). a prottive and insulating casing', when a Smgle Conductor 1S employed, the

jacket orwrappin which,i1 1the construction Cas? n Shawn, is in'the om of ,strips of paper or the same. In theA structure shown,l filler other' fibrous material, preferably treated Strands 11 are'plefefbly employed t0 the `with a reproof as well as'vf'vaterproof comspacey at the Opposlte sldes ofthe adjacent4 pound. Said strips are woundupon the casedges of the sepa-rate conductors 1n orderto 5 ing 6 singly vor in multiple,` andin spiral arform a comparatively solid and well-packed 100 als 'ngor jacket 10 will be. braided laround 95 l l 39 ently take up the stress or strain to which the unitary structure of which the fabric braid constitutes a jacket or casin A conductor constructedin e manner described Will possess all the essential qualities 5 and properties required in conductors of the 1 flexible to a de -olass described and for the use specified, especially from the insulation standpoint. In addition, the particular multiple wrappings or jackets employed renders the conductor ee which will meet all reuirements in t e use of the conductor and t e woven strands 9 extending longitudinally of the conductor and interwoven with the strips 8a and 8b will serve to give materially greater strength and durability to the metal conductor 5 when subjected to longitudinal stress or pull, as well as to -lateral stress, operating also to avoid the rupturing of the casing or jacket 8, and if such casing or jacket be ru tured due to excess bending the strands 9 w operate to retain the casing or acket in position or against displacement.

The flexibility of the conductor above referred to is brought about primarily in the winding `of the strips in pairs, producing a materially greater pitch between the separate windings of each strip by virtue of the composition of the companion stri intermediate the windings of the first name strip as compared with other devices of this class wherein a single strip is wound upon the conductor, necessitatin almostY a right angle wia of the strip with reference to the longitu 'nal lane of the conductor. Due to the materialy increased pitch of the wrap of ap licants strip, greater flexibility is rovid in the resulting product and in a dition it lends economy in materiall reducing the production costs by virtue of7 the increased speed of roducing the product. In addition to the oregoing, and the objects set forth in the specification, one'of the principal and distinctive features of our invention resides in the' direct wrapping of two spirally wound casing or jackets, one upon the other, providing, by virtue of the compositions or com- Y pounds employed thereon, a certain amount of adhesion between each casing or jacket,

and also'permitting each casing to independconductor may be subjected in the bending thereof.

Each of the strips 841-85 shown in Fig. 1 of the drawinglis preferably folded, forexample in the manner illustrated in Fig. 3 of the drawing. It will be noted that these strips are formed from a com aratively wide strip and the edges 8c are drawn 1nwardly upon the adjacent portion of the strip on the folds of`8d and the strip thus folded 1s again folded inwardly at the opposite sides thereof on the folds 8e, and then folded centrally las at 8f to form a comparatively narrow strip of six-ply thickness, and the edges of the strip from which the narrow Strip i8 ures, We have shown two strips 12, both of which are of similar cross sectional form and in the formation of the strips 12, one side edge 12a of a comparatively wide strip is folded at 12b and again at 12e and 12d and the other side edge 12e is extended beyond one side edge of the folded portion which constitutes the strip 12 roper in such manner that the extending e ge or liange 12e will overlie the strip proper of the adjacent strip l 12 and form a closure and-coverin for the abutting edges of adjacent strips in winding the strips on the casing or jacket 6 of the conductor. It will be apparent-that in treating a casing or jacket formed from the strips 12 with fireproof and waterproof material, a relatively closed casing or jacket is formed or a casing or jacket which will present a greater protectionfor the metal conductor 5 than a casing or jacket formed from abutting strips.

' It will be understood that we are not necessarily limited to the specific manner of winding the strips of the rtective casings herein shown and descri nor to the specific material employed in or manner of constructing said strips, nor is our invention limited to the specific arrangement of the `strands 9 or method of weaving the same herein set out, and various other changes in and modifications of the construction herein shown and described may be made the scope of the appended claims without departirilitg from the spirit of our invention or saccing its advantages.

Having' fully described our invention, whatwe claim as new and desire to secure by Letters Patent, is

1. An article of vmanufacture comprising in combination, a metallic electric conductor, a body of insulating material surrounding said conductor, and a protector covering consistin of strip fibrous material wound upon said y. of insulating material in spiral fashion, one windin having an edge positioned in substanti A y abutting relation to an edge of an adjacent and also having a mprojectin portion ada ted tooverhe said jacent ges to con and cover the sam v for the conductor comprising spirally e 1 2. An article of manufacture comprising l in combination, a metallic electric conductor ductor, and a protector ioo iot

wound fibrous strip material, each turn of which has an edge disposed adjacent to an edge of an adjacent turn and also has a separate portion adapted to overlie said edges to form an overlap joint maintaining a closure between the separate turns in the lexure of the conductor. Q

3. Ani article ofrmanufacture comprising in combination, an electric conductor, a sheath of insulating compound surrounding said conductor, and a protector casing for the insulated conductor comprising a spirally wound fibrous strip, said strip being thicker along one edge than along the other edge and bein 1 wound with the edges of adjacent turns over apping. A

4. An article of manufacture comprising in. combination, an electric conductor, a sheath vof insulating compoundv surrounding said conductor, and a protector casing comprising a folded paper take which is f thicker along one edge than along the other edge spirally wound about the insulated conductor with adjacent edges overlappingand providing substantially cylindrical outer surface.

5. An article of manufacture comprising in combination, an insulated electric conductor, and a protector casing enclosing the insulated conductor comprising a non-metallic strip which is thicker over approximately one-half of its width than over the other half of its width wound helically about the insulated conductor with adjacent convolutionsv overlapping substantially one-half the width of the strip to provide a substantially' cylindrical outer surface.

In testimony that we claim the foregoing as our invention we have signed our names this 18th day of January 1926.

- EDWIN J. SCHNEIDER.

MERRIT'I B. BRADT.

Vnol 

